our first guest tonight says gun laws are critical part of this national discussion, but the country also needs, he says, to respond to the mental health issues when it comes time mass shootings as well as the corrosive influence of the digital world in the culture of violence. joining us, former common security secretary, former governor of pennsylvania, tom ridge, who also served on the review panel to study the virginia tech shooting which claimed the lives of 32 people. good to have you with this. let's start with the culver legislation here, senator dianne feinstein is putting forward something that looks very familiar to you which is the assault weapons ban which he supported when you were in congress back in 1994. what are your thoughts? >> i think it certainly understandable, predictable that the first focuses on the instruments of this tragedy, the instruments of war, and those of the firearms and the guns. i think, and i hear reread to pinpoint. this is a game changer. i heard the same language upper columbine and virginia tech and the or shootings. we hear it again. unless